Heat-exchange apparatus



Jan '20, 1931. N. H. c-ulwA 1,7895739 HEAT EXCHANGE APPARATUS F11-ed Nov. 5, 1929 l A i...

Patented Jan. zo, 193.1V

v livornvrmv: Hi GAY, onros ANGELES, oALIFonNIA A A Haar-EXCHANGEAPFRATUS" Application filed November AThis invention relates to improvementsin li'eat exchange devices, and more particu-V larly concerns'` a structure which is adapted for the cooling of' liquids. f l

is to `provide a' heat exchange skeletonwhich isformedof relatively simple and easily cion# structed members and which in assembly provides a rigid whole.

Anotherobject of the present' invention is to providenie ans wherebyithe incoming; warm liquid' 'itselfi'producesa circulation and agitation of the' liquidV beingfcooled, and promot'es `the 'effective' Contact of such' liquid with the coolingrrienibers."` f

These and other objects will appear in the course of'A the following 'specification and claims, in conjunction withanillustrative exemplilication of the invention set- Vforth 2 in the accompanying drawings, in which: 4 1 Fig'. 1"is a vertical-sectional. view, sub* stantiallyv on line^11f1`ofFigQ;` h

Fig. 2 is a horizontal sectional view,rsub= stantially on line QAQ of'fFig.1.f

.The heat' exchange" or coolingdevice ace` cordin'g `to thev present' invention is intended particularly for the'coolingiof water', brine andl other liquids,` although obviously.' not limitedvsolely to such employments.' It comprises an external recept'aclefto receive' the liquid to be cooled,-an `internal-skeleton lcom-y prising headers and pipes' for receiving;` lthe cooling medium, and inlet means for the liquid to be cooled, comprising a delivery header'provided with nozzlesy for directing the liquid insuch=imannerthat it causesfa circulationand agitation "within the recept'acle. ,d p j In' the drawings, the receptacle is illus;

40 trated as-having-abody10with closinglupper and lower domesv 11 and 12.: The upper dome or cover'recei'ves a gas withdrawal pipe 13 having afsup-porting an'dliqui-d-tight connec-` tion 14. Within the receptacle arelocated.

the inlet header 15 and outletiheader 16, which' are preferably located' at right angles when Y four f coils are employed, as will be set forth hereinafter', theV inlet header binglocated near thel bottonii vof the receptaolell@ W anfitheouna header near'itsfto'p. ominieei'- One ofthe objectsofthe presenti invention y e 5, 1929i semaine. 14045939. y

ing these two headers area plurality vvof ycoils' en'df'joi'ned with thel inlet header 15 and its 17, 18, 19, 20, each- 'of which hasits lower upperendjoinedwith the outlet header 16; v'

substantially 4identica-l, while the coilsglff andf19-'are symmetrical thereto.,` Infthis way, a very simple, symmetrical and compact-arfl s.

rangement is provided, Sothat-theweig'ht of thel entire' structuremay be supported from the'upper dome`12-- f y f A liquid refrigerant inletpipe 21 likewise passes througha Vsealed joint inthe cover 12:

andis in communication at? its lower end with the'interior of the'inlet'headery 15.` Itis provided eXt'ernallyfof the receptacle with a'fco'n'- trol valve 22.`Also,' an'oil purging'ppe'j passes in sealed condition through the cover c 12fand" enters the inlet headerfl and opens adjacent the, bottom thereo'fkfitflikewisei'is provided 'with -a control or purging valvej 24';

The-inlet pipe 2 5 for theiliquidto becooled passes through the side wallof theja'cket 10 ofthe' receptacle, being proVidedw-ith 'an1inletc'ontrol' valve 26 and having a tight sup# porting' jointl connectionf27 at theWalldO This pipe extend'slin'wardly to a point adi jacentft'heaxis of' the container ac'ket 10 and Y.

is'v there in communication with' a vertical hollowvr column Q-fwhich is located" centrally of the four cooling'coils 17, 18,19'and20 (Fig. 'In Fig; 1"-,f`the'fhollow column-V28. is findicated as joined to tlie inlet headery 15 and outlet header 16 by straps 33j, 34 which arewelded in position, andyserves to Vunite the structure into a coherent whole whi'cbim'ay' b`e handled" as aY unit without fear of rupture or distortion@ vand facilitating the suspensionof allpartsof the apparatus ronithecoverlQ;

' This vhollow column 28 i's'p'r'ovidedlwth a number" ofnozzles vor nipples QQl'lOcatedwith theiraxes` in afsinglej'vertical axial plane of the ,column inltheillustrated'form;

An outlet' pipe" 80 fori thefcooling l-iqui providednear the bottom= ofthe receptacle, likewise having'a' sealedjointl and'l alval've "Ini operation, liquid' is permitted to enter frointlie pipe 25@A past,V the valve: 26j sol that I11;,1ififms intovthefhollow giginne; andi-can d'is.l l

escape therefrom only through the nozzles 29 in ets. As the liquid collects in the receptacle 10, the delivery occurs through more and more of the jets according tothe flow and pressure Y of the liquid as well as the liquid level in the vreceptacle 10. It will be understood, however, that the normal condition of the device is with the receptacle substantially full of liquid being cooled. f

The valve 22 is now opened and liquid refrigerant of any known type is permitted to enter the lower or inlet header 15. This refrigerant flows upward in the several coils 17, 18, 19 and 20, and by evaporation therein is converted to a gas which escapes from the outlet header 16 through the gas return pipe 13 for recompression'and reliquefaction in the usual manner and returned to the pipe 21. Thelevel of liquid refrigerant in the Y coils and therewith the rate'cf cooling maybe regulated by the valve 22.

:As liquidis drawn off from pipe 30 through i valve32, further liquid enters through pipe 25, yand escapes through the nozzles 29 inthe form Yof jets directed substantially tangentially between the pairs of coils 1720 and ,18j-19 as indicated by arrows in Fig. 2,

whereby an active circulation is established 'of theliquid through and around the coils, thus promoting a thorough agitation or mix- Vingof the liquid .within-the receptacle l0,

anda substantially uniform .cooling thereof. l/Vhen oil accumulateswithin the inlet header vto suchV an extent that it obstructs the efficient evaporation, it Imay be drawn off by opening the purging valve 24 in the usual way.

` It will particularly be noted that the assemblage of headers and coils is supported from the top cover by means of the inlet and outlet pipes for refrigerant and the purging pipe: so that a very compact and yet strong and rigid mounting is provided. .Y

YIt isl obvious that the structure may be modifiedY in many ways from the illustrated example, without departing from the scope of the invention.

I claim as new anddesire to secure by` Letters Patent is duce jetsof liquid whereby to cause Vmixing Vof the liquid within the receptacle.

l2. In a heat exchange apparatus, a lower inlet header, an upper outlet header, vertical .planes passing throughsaid headers intersecting in a vertical line, Athe end-s ofV each of kHaving fully described myinvention what said headers being located substantially equal distances from said line, four cooling coils connected at their lower ends into said inlet header and at their upper ends into said outlet header, a liquid refrigerant inlet pipe eX- tending downward and in communication at its lower end with said inlet header, a gaseous refrigerant return pipe in communication with said outlet header, and means connected to said pipes to support the assembly.; o

3. An apparatus as in claim2 in which the assembly is enclosed within a receptacle, and the cover of the receptacle provides the means for supporting said pipes. t I

'4. An apparatus as in claim 2 in which a hollow column is located with its aXissubmunication with said hollow column, said hollow column being provided withv apertures yfor thepassage of the liquid to be cooled so that the jets of liquidfrom said apertures pass substantially tangentially between pairs of said coils. Y Y

5. Ina heat 'exchange apparatusa receptacle adapted to contain the fluid to be treated, inlet and outlet headers and means whereby the heat exchanging fluid is delivered to and removed from the same, a pair of spaced coils connectedbetween said headers, and an inlet member for the fluid to be treated extending opposite the space between the coils, said member having means to produce av rapid jet-like flowof fluid from said member intofthev receptacle whereby yto cause a circulation of the fluid within the receptacle between and through thefcoils and over the surfaces. v.

6. In a heat'exchange apparatus, a receptaCle adapted to contain the fluid to be treated,

inlet and outlet headers and means whereby the heat exchanging fluid-is delivered to and removed from .theV same, spaced coils connected between -said headers, and an inlet member for the fluid to be treated located in the space between the coils, said member having means to'produce a rapid jet-like flow ofy fluid froml said member into the receptacle Y whereby to causeA a circulation of the fluid within the receptacle between and through the coils and over the surfaces.

Y7.v In a heat exchangelapparatus, a receptacle adapted to contain the fluid to be treated, inletand ,outlet headers and conduitswhereby the heatV exchangingl fluid is vdelivered to and removed from the same, spaced coils `conv nected between said headers, an inlet mem-V ber for the fluid to be treated having rigid mechanical connections to said headers, andy 'gfmeans to support the assembly of headers.

and inletmember in said receptacle, said member having kmeans to produce a lrapid j etlike flow of fluid from said member into the receptacle `whereby to cause a Vcirculation of the fluid Within the receptacle between and through the coils and over the surfaces.

8. A heat exchange apparatus as in claimv 7, in which the receptacle has a cover and the assembly is suspended from the cover.

9. A heat exchange apparatus as in claim 7, in which the receptacle has a cover, and at least one of the conduits extends through and is mechanically connected to the cover Whereby to support said assembly.

10. In a heat exchange apparatus, a receptacle adapted to contain the fluid to be treated, spaced inlet and outlet headers ,and means whereby the heat exchanging fluid is delivered to and removed from the same, a plurality of conduits connecting said headers, and a hollow supply member located between said headers and provided with a plurality of apertures to produce jets of entering fluid whereby to cause the entering Huid and the iiuid present in the receptacle to become agitated and mixed to Vpass over the surfaces of said conduits. Y

In testimony whereof, I affix my signature.

.NORMAN H. GAY. 

